How to do an auto completion word in textbox..

Hi,

I got a textbox that I wonna do to it an auto completion word...

like when he press on a letter all the word with a will be aprear.. and after pressing  he'll press b [ab] and the word that start with ab will aprear and he will be able to select one of them

How to do that?

What control to use?

Thanks, Gil
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